David stafffek



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TO .ALL WHOM IT MAY CONCERN:

Be it known that I, DAVID STIIUFFER, of Spring Hills, Champaign county, State of Ohio, have invented a` new and improved Stump Extractor; and I do hereby declare that the fllowing isa i'ull, clear, and exact description thereof, which will enable others skilled in the art to make'and use the same, reference being had to the accompanying drawing, forming part of this specification, in which- Figure I is a side elevation of the machine partly broken out to show its application to a stump.

Figure 2 is a plan.r

Similar letters of reference indicate` like parts.

The nature of this invention consists in constructing a cheap and powerful machine, which any mechanic or farmer can make, for extracting stumps vertically from the ground by means of longr and strong double handle-vers, with a very short adjustable purchase, the levers being` so arranged as to loosen and raise the stump gradually, both by depressing and lifting with alternate changes ci' the fnlcrum in two sets or rows of' holes. I

The machine sets over and straddlcs the stump and does not require an anchor, the ground underneath being the resisting point t0 the force applied for drawing out the stump. The principle of lifting or working vertiv cally with a succession of short purchases by double levers to operate on both sides of the stump at. the same time is the' distinguishing feature of the machine.

A A are two bed-pieces or strong timbers like sled-runners, on which the machine is mounted, and by which it is drawn from place to place. Upon them are set u, gallows or inverted V-frame, constructed on one side of single timbers B B, and on the other of double timbers C C, between which work the levers D D In the frames C C are two rows of' holes, a and a for receiving bolts 6 b.` On the shorty arms of the levers are hung chains or hoolc rods c c to clevises. On the front end of the machine the cross-bar E isimade to ht upon the runners A A, so that it can be taken off and replaced readily. g

'When operated, the machine is drawn astraddle oi' the stump, the cross-bar E beiugremoved for the purpose. The chains or hooks are then fastened about the roots oi the stump, vand under the short arms of the-levers nre placed bolts b Z1, through the lowest holes, a al, at which the work of drawing the stumps can be started. The boltrb, under e. lever placed in thev hole a', for example, becomes the fulcrum of' one of thc-'levers D bybear ing down upon it. When the first purchase taken is cxhaustcd another bolt is then put in the hole aon-the other side oi' the chain or hook rod c, and it becomes the 'fulcrum on which the lever is then raised to perform thev work. 'Ihus the machine is operated by alternately moving the fulcrum before and behind the chain by changing the bolts Z1 b in the llole's-e d', andreversing the action of the lever. This is done simultaneously with both levers on both sides of the stump, which is thus by easy but powerful purchases gradually drawn from the ground as the levers climb up the frames C O on the bolts b b, placed alternately in the holes a a.

Having thus described the construction and oporationoi my invention, what I claim as new, and desire to secure by Letters VPatent, isp The inverted frame B 13. and O C, set upon runners A A, combined withthe levers D D working in C O, and operated by moving the fulcrum bolts b b in the holes a a', and alternately lifting and depressing the levers' for the gradual extraction 'oi' stumps, constructed and arranged to work substantially as herein described.

DAVID STAUFFER.

Witnesses:

BENJAMIN Davis, `RunoLrH Fonnv. 

